AutoHotkey Community

Gui, New
Gui, Add, Picture,  ,pf.jpg
Gui, Add, Button, section  , spiritual
Gui, Add, Button, , Oliver
Gui, Add, Button, , Internet
Gui, Add, Button, , Papal
Gui, Add, Button, ys , organizer
Gui, Add, Button, , Chris
Gui, Add, Button, , GMail
Gui, Add, Button, , Cheryl
Gui, Add, Button, ys , translit
Gui, Add, Button, , Resump
Gui, Add, Button, , AHK
Gui, Add, Button, , Calc
Gui, Show, ,my main

Gui, New
Gui, Add, Picture, w200 h150 BackgroundTrans, C:\Users\Public\Pictures\Sample Pictures\Tulips.jpg
Gui, Add, Button, xp+20 yp+50 w150 h50, Button
Gui, Show, ,my main

Gui, New, +hwndHwndGui

; Compose Gui controls
Gui, Add, Button, section , spiritual
Gui, Add, Button, , Oliver
Gui, Add, Button, , Internet
Gui, Add, Button, , Papal
Gui, Add, Button, ys , organizer
Gui, Add, Button, , Chris
Gui, Add, Button, , GMail
Gui, Add, Button, , Cheryl
Gui, Add, Button, ys , translit
Gui, Add, Button, , Resump
Gui, Add, Button, , AHK
Gui, Add, Button, , Calc

; Show the Gui, but make it invisible to retrieve the dimensions
Gui, Show, Hide
DetectHiddenWIndows, On   ;necessary
WinGetPos,,, GuiWidth, GuiHeight, ahk_id %hWndGui%
WinGet, ControlListHwnd , ControlListHwnd, ahk_id %hWndGui%

; Add the picture with the retrieved dimensions.
Gui, Add, Picture, x0 y0 w%GuiWidth% h%GuiHeight% hwndhWndPicControl, C:\Users\Public\Pictures\Sample Pictures\Tulips.jpg

; Show Gui
Gui, Show,,my main

; Redraw only works when the window is visible
Loop, Parse, ControlListHwnd, `n
   WinSet, Redraw,, ahk_id %A_LoopField%